EP0418718A1 - Hydraulisch dämpfende Buchse - Google Patents

Hydraulisch dämpfende Buchse Download PDF

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Publication number
EP0418718A1
EP0418718A1 EP90117557A EP90117557A EP0418718A1 EP 0418718 A1 EP0418718 A1 EP 0418718A1 EP 90117557 A EP90117557 A EP 90117557A EP 90117557 A EP90117557 A EP 90117557A EP 0418718 A1 EP0418718 A1 EP 0418718A1
Authority
EP
European Patent Office
Prior art keywords
shells
bushing
elastomer body
bush
socket according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP90117557A
Other languages
German (de)
English (en)
French (fr)
Inventor
Mathias Gugsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metzeler Gimetall AG
Original Assignee
Metzeler GmbH
Metzeler Gimetall AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metzeler GmbH, Metzeler Gimetall AG filed Critical Metzeler GmbH
Publication of EP0418718A1 publication Critical patent/EP0418718A1/de
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
    • F16F13/1427—Units of the bushing type, i.e. loaded predominantly radially characterised by features of flexible walls of equilibration chambers; decoupling or self-tuning means

Definitions

  • the invention relates to a hydraulically damping bushing, in particular a wishbone mounting for motor vehicles, with a radially supporting elastomer body which is arranged between a cylindrical inner bushing and a cylindrical outer bushing and has two hollow chambers lying opposite one another in the radial direction and filled with a hydraulic fluid, which have a Constantly open overflow channel and two auxiliary channels parallel to each other, each with a unidirectionally oppositely opening valve, are connected to one another.
  • Such a bush bearing is known from EP-B-0 234 966.
  • the dynamic characteristics of the bearing i.e. the stiffness and damping values for small vibration amplitudes, determined via the channel geometry of the primary overflow channel, while for larger amplitudes, where one of the auxiliary channels opens depending on the direction of the forces acting and the corresponding pressure, the interaction of both channel systems determines the characteristic values.
  • the stiffness of the bushing can be reduced and the damping values can be improved in the case of shock-like loading, that is to say with large amplitudes and high speed of movement.
  • the well-known socket is, however, for defining the individual Nen channel geometries made up of several parts of elastomers of different hardness and therefore requires a very complicated structure and a high manufacturing effort. In addition, such a socket builds relatively large.
  • the present invention has for its object to provide a hydraulically damping bushing which is very simply constructed from only a few individual parts and which is not larger in volume than a conventional wishbone bushing damped solely by the elastomer properties. Furthermore, a correspondingly large free travel for radial displacements without significant tensile stresses should be made possible by a corresponding shaping of the elastomer part of the bushing.
  • the invention provides that the bushing has a single, one-piece vulcanization part inserted into the outer bushing from inner bushing with vulcanized-on cylindrical elastomer body and an intermediate sleeve vulcanized into the outer region, in which the hollow chambers are formed by two recesses in the shape of a circular segment in cross-section and open to the outside Elastomer part and the intermediate sleeve are formed, which are covered by circular-arc-shaped shells of the same width, in the outer surfaces of which are covered by the outer bush and the corresponding outer surfaces of the elastomer body, the main channel and the two auxiliary channels are cut, which are connected to the hollow chambers via the holes passing through the shells .
  • the very compact bushing bearing has only three individual parts within the outer bushing, namely the two identically designed shells and the elastomer part which is integral with the inner bushing, so that manufacturing and assembly are extremely simple, so that sources of error and disadvantages for functionality are reliably avoided.
  • the two circular-arched shells made of metal or plastic expediently each have a groove-shaped incision for the main channel over a predetermined circumferential area on the outside, which cuts a circumferential edge of the shells and ends at the other end in a bore penetrating the shell.
  • each bore is then additionally closed on the inside with a tab-like spring tongue which opens at a predetermined pressure as an unidirectional valve.
  • spring tongues can be formed by rubber tabs vulcanized to the side of the elastomer body and projecting in the direction of the recesses, which after assembly of the bushing lie against the bores of the auxiliary channels and close them in a pressure-dependent manner.
  • the spring tongues it is also possible for the spring tongues to be formed by spring steel plates fastened on the inside of the shells and covering the auxiliary channel bores with their free ends.
  • a gate opening out tangentially from the inside of the shell is provided as an inlet for the second auxiliary channel, through which flow flows in the opposite direction.
  • a particularly favorable design results if the groove-shaped incisions for the main channel extend to one peripheral edge and the incisions for the auxiliary channels extend to and from the other peripheral edge of the shells mirror-image insertion with corresponding incisions on the remaining circumferential surfaces of the elastomer body.
  • the elastomer bodies in the region of the recesses adjacent to the inner bushing can each have at least one dome-shaped attachment made of elastomer material as a radial stop.
  • such a hydraulically damped bushing has a cylindrical inner bushing 1 and a cylindrical outer bushing 2, between which a radially supporting, one-piece elastomer body 3 is arranged, which is connected to the inner bushing 1 in one Piece is vulcanized.
  • an intermediate sleeve 19 is vulcanized in order to give the vulcanization part the necessary dimensional rigidity.
  • This elastomer body 3 with the intermediate sleeve 19 has on both radially opposite sides approximately circular segment-shaped recesses corresponding to the contours 4 and 5, which are initially open to the outside and are then closed by the two circular-shaped shells 6 and 7 made of plastic or metal when the Outer bush 2 is pressed over. Between these two shells 6 and 7 and the elastomer body 3, the two hollow chambers 8 and 9 are thus formed, which are filled with a liquid and are connected to one another in the following manner.
  • FIGS. 7 and 8 One of the two shells 6 and 7, which are of identical design, is shown in perspective view from the outside and from the inside in FIGS. 7 and 8. After that is too Next, a groove-shaped incision 10 is provided in the outside of the shell 6 over a predetermined circumferential area approximately in the middle of the shell width, which cuts the one circumferential edge 11 of the shell 6 and at the other end - approximately in the middle of the circumferential surface - in a shell 6 penetrating bore 12 ends. In the same way, a corresponding incision 13 is provided in the lower region of the elastomer body 3, specifically in the circumferential region that has remained, with the corresponding retraction of the intermediate sleeve 19.
  • the groove-shaped incisions 10 in the shells 6 and 7 together with the incision 13 form a continuously aligned channel which opens into the two hollow chambers 8 and 9 via the bores 12 and thereby connects them.
  • the shells 6 and 7 expediently have a groove-shaped incision 15 which extends to the other circumferential edge 14 and which ends in a bore 16 penetrating the shell 6.
  • this bore 16 is closed with a spring steel plate 17 which is braced against the shell 6 laterally next to the bore 16, for example via a screw 18.
  • the shell 6, in the area adjacent to the peripheral edge 14, has a gate 20 which opens tangentially from the inside of the shell and which forms the inlet of the other auxiliary channel.
  • the auxiliary channel through which the incision 22 in the elastomer body 3 flows in a different direction, as shown in FIG. 5, then enables a liquid exchange from the chamber 9 into the chamber 8 with appropriate damping under a corresponding load.
  • FIG. 9 Another possibility of designing the spring tongue for closing the auxiliary channels is shown in the cross section according to FIG. 9, which corresponds approximately to the cross section according to FIG. 3. Thereafter, a rubber tab 25 is vulcanized laterally at the upper end of the elastomer body 3, which also closes the bore 16 under appropriate pretension.
  • a hydraulically damping bushing which has only a single vulcanization part 30 comprising inner bushing 1, elastomer part 3 and intermediate sleeve 19, as is shown again in detail in FIG. 6.
  • This vulcanization part 30 can then with the two shells 6 and 7 in the outer sleeve 2 on can be pressed in several ways. Characterized in that then both the main channel 10, 13 and the auxiliary channels 15, 21 and 15, 22 on the outer circumference of the inner bushings run on practically the same diameter, they are also loaded in the same way when impacts occur, so that with appropriate prestressing of the spring tongues 17 or 25, a precisely defined opening point for the auxiliary channels can also be created.
  • the length of the main channel 10, 13 is approximately 3/4 of the entire socket circumference.
  • the shape of the side parts delimiting the liquid chambers enables a free travel of approximately 10% of the bushing diameter without significant tensile stresses occurring.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
EP90117557A 1989-09-13 1990-09-12 Hydraulisch dämpfende Buchse Ceased EP0418718A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893930644 DE3930644A1 (de) 1989-09-13 1989-09-13 Hydraulisch daempfende buchse
DE3930644 1989-09-13

Publications (1)

Publication Number Publication Date
EP0418718A1 true EP0418718A1 (de) 1991-03-27

Family

ID=6389374

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90117557A Ceased EP0418718A1 (de) 1989-09-13 1990-09-12 Hydraulisch dämpfende Buchse

Country Status (3)

Country Link
EP (1) EP0418718A1 (enrdf_load_stackoverflow)
JP (1) JP2885917B2 (enrdf_load_stackoverflow)
DE (1) DE3930644A1 (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5496018A (en) * 1994-08-10 1996-03-05 Gencorp Inc. Fluid damped bushing with encapsulated window metal
EP0798487A1 (fr) * 1996-03-29 1997-10-01 Hutchinson Manchons de support antivibratoires hydrauliques
US5702094A (en) * 1994-08-10 1997-12-30 Btr Antivibration Systems, Inc. Fluid damped bushing with encapsulated window metal
WO2000066910A1 (de) * 1999-04-30 2000-11-09 ZF Lemförder Metallwaren AG Gummilager mit radialer wegbegrenzung und dämpfungsmittelkanal
US20120319337A1 (en) * 2010-03-19 2012-12-20 Toyo Tire & Rubber Co., Ltd. Vibration isolation device and manufacturing method thereof

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4332480C2 (de) * 1993-09-24 1996-02-15 Boge Gmbh Hydraulisch dämpfendes Gummilager
DE19729290C2 (de) * 1996-09-26 2002-03-14 Mannesmann Boge Gmbh Hydraulisch dämpfendes Gummilager
DE102004059681B4 (de) * 2004-12-10 2007-09-13 Trelleborg Automotive Technical Centre Gmbh Hydraulisch dämpfende Lagerbuchse
FR2887001B1 (fr) * 2005-06-14 2007-08-17 Michelin Soc Tech Articulation hydroelastique comportant un circuit de liaison pour le liquide
US9234979B2 (en) 2009-12-08 2016-01-12 Magna Closures Inc. Wide activation angle pinch sensor section
US8493081B2 (en) 2009-12-08 2013-07-23 Magna Closures Inc. Wide activation angle pinch sensor section and sensor hook-on attachment principle
DE102016113309B4 (de) * 2016-07-19 2020-07-23 Vibracoustic Gmbh Hydraulisch dämpfendes Lager

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3617787A1 (de) * 1985-05-27 1986-11-27 Bridgestone Corp., Tokio/Tokyo Schwingungsdaempfer
EP0234966A1 (fr) * 1986-01-22 1987-09-02 Automobiles Peugeot Articulation hydro-élastique
EP0332901A2 (de) * 1988-03-15 1989-09-20 Metzeler Gimetall Ag Elastische und hydraulisch dämpfende Buchse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2841505C2 (de) * 1978-09-23 1983-04-07 Boge Gmbh, 5208 Eitorf Hydraulisch dämpfendes Gummilager
AU555483B2 (en) * 1984-04-05 1986-09-25 Bridgestone Corporation Liquid filled elastomeric bushings
JPS6165935A (ja) * 1984-09-07 1986-04-04 Tokai Rubber Ind Ltd 液入りブツシユ型エンジンマウント
DE3800656A1 (de) * 1988-01-13 1989-08-03 Freudenberg Carl Fa Hydraulisch daempfende huelsengummifeder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3617787A1 (de) * 1985-05-27 1986-11-27 Bridgestone Corp., Tokio/Tokyo Schwingungsdaempfer
EP0234966A1 (fr) * 1986-01-22 1987-09-02 Automobiles Peugeot Articulation hydro-élastique
EP0332901A2 (de) * 1988-03-15 1989-09-20 Metzeler Gimetall Ag Elastische und hydraulisch dämpfende Buchse

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5496018A (en) * 1994-08-10 1996-03-05 Gencorp Inc. Fluid damped bushing with encapsulated window metal
EP0697543A3 (en) * 1994-08-10 1997-06-11 Gencorp Inc Hydraulically damped sleeve with encapsulated metal light
US5702094A (en) * 1994-08-10 1997-12-30 Btr Antivibration Systems, Inc. Fluid damped bushing with encapsulated window metal
EP0789159A3 (en) * 1996-02-05 1999-12-29 BTR Antivibration Systems, Inc. Fluid damped bushing with encapsulated window metal
EP0798487A1 (fr) * 1996-03-29 1997-10-01 Hutchinson Manchons de support antivibratoires hydrauliques
FR2746877A1 (fr) * 1996-03-29 1997-10-03 Hutchinson Manchons de support antivibratoires hydrauliques
WO2000066910A1 (de) * 1999-04-30 2000-11-09 ZF Lemförder Metallwaren AG Gummilager mit radialer wegbegrenzung und dämpfungsmittelkanal
US6364298B1 (en) 1999-04-30 2002-04-02 ZF Lemförder Metallwaren AG Rubber bearing with radial travel limitation and damping agent channel
US20120319337A1 (en) * 2010-03-19 2012-12-20 Toyo Tire & Rubber Co., Ltd. Vibration isolation device and manufacturing method thereof
US9010739B2 (en) * 2010-03-19 2015-04-21 Toyo Tire & Rubber Co., Ltd. Vibration isolation device and manufacturing method thereof

Also Published As

Publication number Publication date
JPH03107638A (ja) 1991-05-08
DE3930644C2 (enrdf_load_stackoverflow) 1991-11-28
DE3930644A1 (de) 1991-03-28
JP2885917B2 (ja) 1999-04-26

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